Cotton carding device capable of removing foreign fibers through visual inspection

Abstract

The utility model discloses a cotton carding device capable of removing foreign fibers through visual inspection, and belongs to the technical field of cotton carding. Comprising a carding machine body, a cotton outlet, a rack, a front conveying structure, a rear conveying structure, an image acquisition module, a visual identification module, a foreign fiber collection structure and a foreign fiber separation structure, a gap is formed between the front conveying structure and the rear conveying structure, and the front conveying structure and the rear conveying structure are connected with a web outlet and a cotton outlet of the carding machine body respectively; the image acquisition module comprises an upper line light source, a lower line light source and a camera; the upper line light source and the lower line light source are both located on the front portion of the interval and located over and under the cotton web respectively. The foreign fiber separating structure and the foreign fiber collecting structure are both located on the rear portion of the interval and located over and under the cotton web respectively. The foreign fiber separation structure comprises a plurality of air taps, the air taps are connected with the compressed air supply structure through pipelines with electromagnetic valves, and the foreign fiber collection structure is located under the air taps; and the camera and the electromagnetic valve are electrically connected with the visual identification module.

Description

Technical Field

[0001] The utility model belongs to the technical field of cotton combing, and particularly relates to a cotton combing device capable of removing foreign fibers through visual detection. Background Art

[0002] The production process of 100% cotton spunlace nonwovens includes cotton picking, opening and cleaning, carding, foreign fiber separation, web laying, spunlace and degreasing. The working principle of the carding machine is to Front-end process The cotton rolls delivered or the oil cotton layer supplied by the cotton box are opened, combed and cleaned to make all the curled cotton loops become basically straight single fiber state, and in the process, remove the residues left over from the cleaning process Broken seeds , impurities and short fibers, etc.

[0003] Carding is the main impurity removal process, but there are still a small amount of impurities that cannot be separated, such as foreign fibers; even after the subsequent foreign fiber separation process, there are still a small amount of foreign fibers. After the spunlace is completed, the cloth needs to be inspected and the foreign fibers need to be processed (such as picking out foreign fibers or cutting off foreign fibers, etc.). The inspection of the cloth is stressful and will cause product loss.

[0004] In the prior art, there is a method of detecting foreign fibers during carding, but only detecting the foreign fibers without processing them. For example, the patent with application number CN201621347334.7 discloses a cotton web quality detection system for a carding machine, including a cotton web output device, a camera device, a light source and a detection device. The camera device and the light source are both arranged above the outlet of the cotton web output device, and the angle between the light source and the camera device is 30 degrees. The camera device and the detection device are electrically connected, and also include a detection box. The left and right side walls of the detection box are respectively provided with a first channel and a second channel, and the cotton web passes through the first channel and the second channel; a dust suction pipe is provided at the top of the detection box, and the dust suction pipe is connected to filter cotton through a fan; the camera device and the light source are arranged in the detection box. Summary of the invention

[0005] In order to solve the above problems, the embodiment of the utility model provides a carding device that can remove foreign fibers through visual detection. The applicant found that the cotton web output by the carding machine (before it is formed into strips) is very thin (less than 1mm), which is not only convenient for visual detection, but also for foreign fiber separation. This patent realizes foreign fiber detection through vision and automatically separates foreign fibers. The technical solution is as follows:

[0006] The utility model provides a carding device capable of removing foreign fibers by visual detection, comprising a carding machine body 1 and a cotton outlet 2 at the rear thereof, the device also comprising a frame and a front conveying structure 3, a rear conveying structure 4, an image acquisition module 5, a visual recognition module, a foreign fiber collection structure 6 and a foreign fiber separation structure 7 thereon; the front conveying structure 3 and the rear conveying structure 4 are both arranged in the front-to-back direction, and are synchronously driven, with a gap 8 therebetween, which are respectively connected to the cotton web outlet and the cotton outlet 2 of the carding machine body 1; the image acquisition module 5 comprises an upper line light source 51, a lower line light source 52 and at least one camera 53; the upper line light source 51 and the lower line light source 52 are both located in the front of the gap 8, and are both arranged in the left-right direction The camera 53 is located directly above the cotton net 9, and faces the part of the cotton net 9 illuminated by the light source; the foreign fiber separation structure 7 and the foreign fiber collection structure 6 are both located at the rear of the partition 8, and are respectively located directly above and directly below the cotton net 9; the foreign fiber separation structure 7 includes a plurality of air nozzles 71 which are arranged side by side and evenly distributed on the left and right sides, and the air nozzles 71 are arranged vertically downward and are connected to the compressed air supply structure through a pipeline with an electromagnetic valve, and the distance between two adjacent air nozzles 71 is 1.5-3.0 cm; the foreign fiber collection structure 6 is located directly below the air nozzle 71 and is arranged in the left and right directions; the camera 53 and the electromagnetic valve are both electrically connected to the visual recognition module.

[0007] Among them, the cotton outlet 2 in the embodiment of the utility model includes a rectangular tube arranged in the front-to-back direction, a flat bell mouth arranged vertically and larger at the bottom and smaller at the top, and a cotton transport pipe at the upper end of the flat bell mouth, and the rectangular tube and the flat bell mouth are both arranged in the left-right direction; the rectangular tube cooperates with the cotton net outlet, it is aligned with the cotton net outlet, and its rear end is closed; the flat bell mouth is arranged on the upper side of the rear end of the rectangular tube, and the cotton transport pipe is arranged vertically.

[0008] Among them, the front conveying structure 3 in the embodiment of the utility model includes a front conveying belt 31 arranged in the front-to-back direction and a front pressure roller 32 arranged in the left-to-right direction and capable of moving upward, and the rear conveying structure 4 includes a rear conveying belt 41 arranged in the front-to-back direction and a rear pressure roller 42 arranged in the left-to-right direction and capable of moving upward, the front end of the front conveying belt 31 is connected to the cotton net outlet, the rear conveying belt 41 is located directly behind the front conveying belt 31 and its rear end is connected to the rectangular tube; the front conveying belt 31 is flush with the rear conveying belt 41, with a gap 8 between them, and they are driven synchronously; the front pressure roller 32 is located directly above the front conveying belt 31, and the front pressure roller 32 and the front conveying belt 31 are respectively located on the upper and lower sides of the cotton net 9; the rear pressure roller 42 is located directly above the rear conveying belt 41, and the rear pressure roller 42 and the rear conveying belt 41 are respectively located on the upper and lower sides of the cotton net 9.

[0009] Specifically, the upper line light source 51 in the embodiment of the utility model is arranged obliquely downward from front to back, and the lower line light source 52 is arranged obliquely upward from front to back. The upper line light source 51 and the lower line light source 52 are symmetrically arranged with the cotton net 9 up and down. The camera 53 is arranged vertically downward and is located above and behind the upper line light source 51. A white background plate is provided directly below the camera 53 and directly below the cotton net 9, and the white background plate is arranged on the frame in the left and right directions.

[0010] Specifically, there are two cameras 53 in the embodiment of the utility model. A first door bracket 54 is provided on the frame in the left-right direction, and the two cameras 53 are arranged side by side on the first door bracket 54 .

[0011] Specifically, a second gantry bracket 72 is provided on the left and right sides of the frame in the embodiment of the utility model, and the second gantry bracket 72 is located at the rear and lower part of the first gantry bracket 54. The number of the air nozzles 71 is 60 and they are arranged on the second gantry bracket 72. The distance between two adjacent air nozzles 71 is 2.1 cm.

[0012] Specifically, the camera 53 in the embodiment of the present invention is an 8K line scan camera.

[0013] Among them, the foreign fiber collection structure 6 in the embodiment of the utility model includes a foreign fiber collection groove, a filter cotton box and a fan, and the filter cotton box and the fan are both located on the left or right side of the frame; the foreign fiber collection groove is arranged in the left and right directions, and it is arranged directly below the air nozzle 71, which is located directly below the cotton net 9, and it is a conical bucket with a larger upper part and a smaller lower part, and its bottom is connected to the upper part of the filter cotton box through a pipeline; the bottom of the filter cotton box is connected to the fan through a pipeline.

[0014] Furthermore, a support roller 10 is provided on the frame in the embodiment of the utility model and located in the middle of the interval 8; the support roller 10 is arranged in the left and right directions, and is located at the lower side of the cotton net 9, and its speed is coordinated with the front conveying structure 3.

[0015] This patent has the following beneficial effects: The embodiment of the utility model provides a carding device that can remove foreign fibers through visual detection. The applicant found that the cotton web (before it is formed into strips) output by the carding machine is very thin (less than 1mm), which is not only convenient for visual detection, but also convenient for foreign fiber separation (it can be blown off under a certain pressure); this patent realizes foreign fiber detection through vision and automatically separates foreign fibers. The processing effect is good, the detection rate of point-like foreign fibers reaches 93%, the detection rate of filament-like foreign fibers reaches 96%, and the detection rate of ball-like foreign fibers reaches 99%. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a carding device capable of removing foreign fibers through visual detection in an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a front conveying structure, a rear conveying structure, an image acquisition module, a visual recognition module, a foreign fiber collection structure, a foreign fiber separation structure and a cotton outlet combination.

[0018] In the figure: 1 carding machine body, 2 cotton outlet, 3 front conveying structure, 4 rear conveying structure, 5 image acquisition module, 6 foreign fiber collecting structure, 7 foreign fiber separating structure, 8 interval, 9 cotton net, 10 support roller;

[0019] 31 front conveyor belt, 32 front pressure roller;

[0020] 41 rear conveyor belt, 42 rear pressure roller;

[0021] 51 upper line light source, 52 lower line light source, 53 camera, 54 first door bracket

[0022] 71 air nozzle, 72 second door bracket. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] See also Figure 1-2 , Embodiment 1 provides a carding device that can remove foreign fibers through visual detection, and the device includes a carding machine body 1, a frame, a front conveying structure 3, a rear conveying structure 4, an image acquisition module 5, a visual recognition module, a foreign fiber collection structure 6, a foreign fiber separation structure 7, a support roller 10 and a cotton outlet 2, etc. Among them, the cotton outlet 2 is the structure of the carding machine body 1 itself, and before improvement, it is directly arranged on the cotton net outlet of the carding machine body 1. In this patent, the cotton outlet 2 needs to be moved backward (1.0-1.5m) to install the front conveying structure 3 and the rear conveying structure 4. Specifically, the cotton outlet 2 includes a rectangular tube arranged in the front-to-back direction, a flat bell mouth arranged vertically and having a larger bottom and a smaller top, and a cotton conveying tube at the upper end of the flat bell mouth, etc., and the rectangular tube and the flat bell mouth are both arranged in the left-right direction. The rectangular tube cooperates with the cotton net outlet, is aligned with the cotton net outlet, has an open front end, and has a closed rear end. The flat bell mouth is arranged on the upper side of the rear end of the rectangular tube and its lower end cooperates with the rear end of the rectangular tube, and the cotton conveying tube is arranged vertically (negative pressure outputs cotton fibers backward). The front conveying structure 3, the rear conveying structure 4, the image acquisition module 5, the foreign fiber collection structure 6, the foreign fiber separation structure 7, the support roller 10 and the cotton outlet 2 are all arranged on the frame.

[0026] The front conveying structure 3 and the rear conveying structure 4 are both arranged in the front-back direction, and are synchronously driven, with a gap 8 therebetween, which are respectively connected to the cotton web outlet and the cotton outlet 2 of the carding machine body 1. The front conveying structure 3 and the rear conveying structure 4 are used to convey the cotton web 9 backward. Visual detection and foreign fiber separation are achieved at the gap 8.

[0027] Among them, the image acquisition module 5 includes an upper line light source 51, a lower line light source 52, a white background plate, a first gantry bracket 54 and at least one camera 53. The upper line light source 51, the lower line light source 52, the white background plate and the camera 53 are all located in front of the support roller 10. The upper line light source 51 and the lower line light source 52 are both located in the front of the interval 8, and are both arranged in the left and right directions. They are respectively located directly above and directly below the cotton net 9, and they illuminate the upper and lower sides of the corresponding positions of the cotton net 9 respectively. Specifically, the upper line light source 51 is arranged obliquely downward from front to back, and the lower line light source 52 is arranged obliquely upward from front to back. The upper line light source 51 and the lower line light source 52 are symmetrically arranged with the cotton net 9 up and down. The first gantry bracket 54 is arranged on the frame in the left and right directions. If there are multiple cameras 53, the multiple cameras 53 are arranged side by side and evenly distributed. The camera 53 is located directly above the cotton web 9, facing the part of the cotton web 9 illuminated by the light source, and is vertically arranged downward, located above and behind the upper line light source 51, and located on the front side of the top beam of the first gantry bracket 54, and located above and in front of the support roller 10. The white background plate is arranged on the frame in the left-right direction, and is located directly below the camera 53, and is located directly below the cotton web 9.

[0028] The support roller 10 is arranged in the left-right direction, located in the middle of the interval 8, located at the lower side of the cotton web 9, and its speed is coordinated with the front conveying structure 3, and is used to support the cotton web 9. Specifically, the support roller 10 is synchronously driven with the front conveying belt 31 and the rear conveying belt 41 through a synchronous belt.

[0029] Among them, the foreign fiber separation structure 7 and the foreign fiber collection structure 6 are both located at the rear of the interval 8, and are respectively located directly above and directly below the cotton net 9. The foreign fiber separation structure 7 includes a second gantry bracket 72 and a plurality of air nozzles 71 arranged side by side and evenly distributed on it. The second gantry bracket 72 is located at the rear and lower part of the first gantry bracket 54, and is arranged on the frame in the left and right directions. The air nozzle 71 is arranged vertically downward, and is arranged on the top beam of the second gantry bracket 72. It is connected to the compressed air supply structure (outputting compressed air with a pressure of 5.5-7.5 kg) through a pipeline with a solenoid valve. The distance between two adjacent air nozzles 71 is 1.5-3.0 cm to ensure that foreign fiber separation can be achieved for the entire cotton net 9. The foreign fiber collection structure 6 is located directly below the air nozzle 71 and is arranged in the left and right directions. Specifically, the foreign fiber collection structure 6 includes a foreign fiber collection tank, a cotton filter box, and a fan, and the cotton filter box and the fan are both located on the left or right side of the frame. The foreign fiber collection tank is arranged in the left and right directions, and is arranged directly below the air nozzle 71, and is located directly below the cotton net 9. It is a cone bucket with a large top and a small bottom, and its bottom is connected to the upper part of the cotton filter box through a pipeline, and is located adjacent to and behind the support roller 10. A filter net is arranged in the cotton filter box, and its bottom is connected to the fan through a pipeline. The fan is used to form negative pressure.

[0030] The camera 53 and the electromagnetic valve are both electrically connected to the visual recognition module, and the visual recognition module realizes image processing and control of the electromagnetic valve.

[0031] Among them, the front conveying structure 3 in the embodiment of the utility model includes a front conveying belt 31 arranged in the front-back direction and a front pressure roller 32 that can move upward along the left-right direction (initially rising, at other times in a low position, driven by cylinders at both ends), etc., and the rear conveying structure 4 includes a rear conveying belt 41 arranged in the front-back direction and a rear pressure roller 42 that can move upward along the left-right direction (initially rising, at other times in a low position, driven by cylinders at both ends), etc. The front end of the front conveying belt 31 is connected to the cotton net outlet, and the rear conveying belt 41 is located directly behind the front conveying belt 31 and its rear end is connected to the rectangular tube. The front conveying belt 31 is flush with the rear conveying belt 41, with a gap 8 between them, and they are driven synchronously. The front pressure roller 32 is located directly above the front conveying belt 31, and the front pressure roller 32 and the front conveying belt 31 are respectively located on the upper and lower sides of the cotton net 9. The rear pressure roller 42 is located directly above the rear conveying belt 41, and the rear pressure roller 42 and the rear conveying belt 41 are respectively located on the upper and lower sides of the cotton net 9. The lengths of the front conveyor belt 31 and the rear conveyor belt 41 are both less than 0.7 m.

[0032] Example 2

[0033] Example 2 provides a combing device that can remove foreign fibers through visual inspection, and its structure is basically the same as that of Example 1, except that: the width of the cotton net 9 in this embodiment is 1.2m. There are two cameras 53, which are 1.0m away from the cotton net 9, have a field of view of 1.4m, and a detection accuracy of 10 pixels per 0.8mm. Camera 53 is an 8K line scan camera. The lengths of the upper line light source 51 and the lower line light source 52 are both 1.4m. The number of air nozzles 71 is 60, and the distance between two adjacent air nozzles 71 is 2.2cm. The compressed air supply structure outputs compressed air with a pressure of about 6 kilograms, and the linear speed of the cotton net 9 is 100m / min. The detection effect is shown in Table 1:

[0034] Table 1

[0035]

[0036] Among them, "first" and "second" in this patent only serve to distinguish and have no other special meanings.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A carding device capable of removing foreign fibers by visual detection, comprising a carding machine body (1) and a cotton outlet (2) at the rear thereof; characterized in that: The device also includes a frame and a front conveying structure (3), a rear conveying structure (4), an image acquisition module (5), a visual recognition module, a foreign fiber collection structure (6) and a foreign fiber separation structure (7) thereon; the front conveying structure (3) and the rear conveying structure (4) are both arranged in the front-to-back direction, are driven synchronously, and have a gap (8) therebetween, which are respectively connected to the cotton web outlet and the cotton outlet (2) of the carding machine body (1); the image acquisition module (5) includes an upper line light source (51), a lower line light source (52) and at least one camera (53); the upper line light source (51) and the lower line light source (52) are both located in the front part of the gap (8), are both arranged in the left-right direction, and are respectively located above and below the cotton web (9); The camera (53) is located directly above the cotton web (9), and faces the part of the cotton web (9) illuminated by the light source; the foreign fiber separation structure (7) and the foreign fiber collection structure (6) are both located at the rear of the partition (8), and are respectively located directly above and directly below the cotton web (9); the foreign fiber separation structure (7) includes a plurality of air nozzles (71) arranged side by side and evenly distributed on the left and right sides, the air nozzles (71) are arranged vertically downward and are connected to the compressed air supply structure through a pipeline with an electromagnetic valve, and the distance between two adjacent air nozzles (71) is 1.5-3.0 cm; the foreign fiber collection structure (6) is located directly below the air nozzle (71) and is arranged in the left and right directions; the camera (53) and the electromagnetic valve are both electrically connected to the visual recognition module.

2. The carding device capable of removing foreign fibers by visual detection according to claim 1, characterized in that: The cotton outlet (2) comprises a rectangular tube arranged in the front-to-back direction, a flat bell mouth arranged vertically and having a larger bottom and a smaller top, and a cotton delivery pipe at the upper end of the flat bell mouth, wherein the rectangular tube and the flat bell mouth are both arranged in the left-right direction; the rectangular tube cooperates with the cotton net outlet, is aligned with the cotton net outlet, and has a closed rear end; the flat bell mouth is arranged on the upper side of the rear end of the rectangular tube, and the cotton delivery pipe is arranged vertically.

3. The carding device capable of removing foreign fibers by visual detection according to claim 2, characterized in that: The front conveying structure (3) comprises a front conveying belt (31) arranged in the front-to-back direction and a front pressure roller (32) arranged in the left-right direction and capable of moving upwards; the rear conveying structure (4) comprises a rear conveying belt (41) arranged in the front-to-back direction and a rear pressure roller (42) arranged in the left-to-right direction and capable of moving upwards; the front end of the front conveying belt (31) is connected to the cotton web outlet; the rear conveying belt (41) is located directly behind the front conveying belt (31) and its rear end is connected to the rectangular tube; the front conveying belt (31) and the rear conveying belt (41) are flush with each other, with a gap (8) therebetween, and they are driven synchronously; the front pressure roller (32) is located directly above the front conveying belt (31), and the front pressure roller (32) and the front conveying belt (31) are respectively located on the upper and lower sides of the cotton web (9); the rear pressure roller (42) is located directly above the rear conveying belt (41), and the rear pressure roller (42) and the rear conveying belt (41) are respectively located on the upper and lower sides of the cotton web (9).

4. The carding device capable of removing foreign fibers by visual detection according to claim 1, characterized in that: The upper line light source (51) is arranged obliquely downward from front to back, and the lower line light source (52) is arranged obliquely upward from front to back. The upper line light source (51) and the lower line light source (52) are arranged symmetrically with respect to the cotton net (9) up and down. The camera (53) is arranged vertically downward and is located above and behind the upper line light source (51). A white background plate is provided directly below the camera (53) and directly below the cotton net (9), and the white background plate is arranged on the frame in the left-right direction.

5. The carding device capable of removing foreign fibers by visual detection according to claim 4, characterized in that: There are two cameras (53), a first door-type bracket (54) is provided on the frame in the left-right direction, and the two cameras (53) are arranged side by side on the first door-type bracket (54).

6. The carding device capable of removing foreign fibers by visual detection according to claim 5, characterized in that: A second gantry bracket (72) is provided on the frame in the left-right direction, the second gantry bracket (72) is located at the rear and lower part of the first gantry bracket (54), the number of the air nozzles (71) is 60 and they are arranged on the second gantry bracket (72), and the distance between two adjacent air nozzles (71) is 2.1 cm.

7. The carding device capable of removing foreign fibers by visual detection according to claim 1, characterized in that: The camera (53) is an 8K line scan camera.

8. The carding device capable of removing foreign fibers by visual detection according to claim 1, characterized in that: The foreign fiber collection structure (6) comprises a foreign fiber collection trough, a cotton filter box and a fan, wherein the cotton filter box and the fan are both located on the left or right side of the frame; the foreign fiber collection trough is arranged in the left-right direction, and is arranged directly below the air nozzle (71), and is located directly below the cotton net (9), and is a conical bucket with a larger top and a smaller bottom, and its bottom is connected to the upper part of the cotton filter box through a pipeline; the bottom of the cotton filter box is connected to the fan through a pipeline.

9. The carding device capable of removing foreign fibers by visual detection according to claim 1, characterized in that: A support roller (10) is provided on the frame and in the middle of the interval (8); the support roller (10) is arranged in the left and right directions and is located at the lower side of the cotton net (9), and its speed is coordinated with the front conveying structure (3).

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